Plant Diagnostics: The Step-by-Step Approach to Identifying Plant Problems is an online course offered by the UW-Madison Extension Horticulture Program. The course, which runs Feb. 1-April 30, 2026, teaches basic troubleshooting skills for plant-related problems.
Learn the step-by-step process for identifying plant problems in your yard, garden, and even indoors. This course introduces the plant diagnostic process in an easy-to-understand way. Anyone who is interested in becoming a better gardener, regardless of skill level, is invited to register.
At the end of the course, participants will be able to:
● Explain the steps of the diagnostic process
● Identify appropriate resources to use for diagnostics
● Know how to access UW-Madison Extension diagnostic labs and services for additional
support
Plant Diagnostics: The Step-by-Step Approach to Identifying Plant Problems is completely self-paced with 13 modules that contain videos, readings, and interactive activities. Participants are also invited to attend two live webinars, “Putting the Process into Practice: Real World Diagnostics,” led by UW-Madison Extension educators, and “Meet the Labs!,” with UW-Madison diagnostic lab directors.
Registration for the general public and commercial professionals is open until Jan. 29, 2026. An Early Bird registration discount is available now through Jan. 19 at a rate of $99. The regular registration rate ($119) is in place Jan. 22-29. Wisconsin Extension Master Gardeners are eligible for a special discounted rate of $49.
